import { useEpThemeStoreHook } from '@/store/modules/epTheme';
import { defineComponent, ref, computed, type PropType, nextTick } from 'vue';
import {
  delay,
  cloneDeep,
  isBoolean,
  isFunction,
  getKeyList
} from '@pureadmin/utils';

import Sortable from 'sortablejs';
import DragIcon from './svg/drag.svg?component';
import ExpandIcon from './svg/expand.svg?component';
import RefreshIcon from './svg/refresh.svg?component';
import SettingIcon from './svg/settings.svg?component';
import CollapseIcon from './svg/collapse.svg?component';

const props = {
  /** 头部最左边的标题 */
  title: {
    type: String,
    default: '列表'
  },
  /** 对于树形表格，如果想启用展开和折叠功能，传入当前表格的ref即可 */
  tableRef: {
    type: Object as PropType<any>
  },
  /** 需要展示的列 */
  columns: {
    type: Array as PropType<TableColumnList>,
    default: () => []
  },
  isExpandAll: {
    type: Boolean,
    default: true
  }
};

export default defineComponent({
  name: 'PureTableBar',
  props,
  emits: ['refresh'],
  setup(props, { emit, slots, attrs }) {
    const size = ref('default');
    const loading = ref(false);
    const checkAll = ref(true);
    const isIndeterminate = ref(false);
    const isExpandAll = ref(props.isExpandAll);
    const filterColumns = cloneDeep(props?.columns).filter(column =>
      isBoolean(column?.hide)
        ? !column.hide
        : !(isFunction(column?.hide) && column?.hide())
    );
    let checkColumnList = getKeyList(cloneDeep(props?.columns), 'label');
    const checkedColumns = ref(getKeyList(cloneDeep(filterColumns), 'label'));
    const dynamicColumns = ref(cloneDeep(props?.columns));

    const getDropdownItemStyle = computed(() => {
      return s => {
        return {
          background:
            s === size.value ? useEpThemeStoreHook().epThemeColor : '',
          color: s === size.value ? '#fff' : 'var(--el-text-color-primary)'
        };
      };
    });

    const iconClass = computed(() => {
      return [
        'text-black',
        'dark:text-white',
        'duration-100',
        'hover:!text-primary',
        'cursor-pointer',
        'outline-none'
      ];
    });

    const topClass = computed(() => {
      return [
        'flex',
        'justify-between',
        'pt-[3px]',
        'px-[11px]',
        'border-b-[1px]',
        'border-solid',
        'border-[#dcdfe6]',
        'dark:border-[#303030]'
      ];
    });

    function onReFresh() {
      loading.value = true;
      emit('refresh');
      delay(500).then(() => (loading.value = false));
    }

    function onExpand() {
      isExpandAll.value = !isExpandAll.value;
      toggleRowExpansionAll(props.tableRef.data, isExpandAll.value);
    }

    function toggleRowExpansionAll(data, isExpansion) {
      data.forEach(item => {
        props.tableRef.toggleRowExpansion(item, isExpansion);
        if (item.children !== undefined && item.children !== null) {
          toggleRowExpansionAll(item.children, isExpansion);
        }
      });
    }

    function handleCheckAllChange(val: boolean) {
      checkedColumns.value = val ? checkColumnList : [];
      isIndeterminate.value = false;
      dynamicColumns.value.map(column =>
        val ? (column.hide = false) : (column.hide = true)
      );
    }

    function handleCheckedColumnsChange(value: string[]) {
      const checkedCount = value.length;
      checkAll.value = checkedCount === checkColumnList.length;
      isIndeterminate.value =
        checkedCount > 0 && checkedCount < checkColumnList.length;
    }

    function handleCheckColumnListChange(val: boolean, label: string) {
      dynamicColumns.value.filter(item => item.label === label)[0].hide = !val;
    }

    async function onReset() {
      checkAll.value = true;
      isIndeterminate.value = false;
      dynamicColumns.value = cloneDeep(props?.columns);
      checkColumnList = [];
      checkColumnList = await getKeyList(cloneDeep(props?.columns), 'label');
      checkedColumns.value = getKeyList(cloneDeep(filterColumns), 'label');
    }

    const dropdown = {
      dropdown: () => (
        <el-dropdown-menu class="translation">
          <el-dropdown-item
            style={getDropdownItemStyle.value('large')}
            onClick={() => (size.value = 'large')}
          >
            宽松
          </el-dropdown-item>
          <el-dropdown-item
            style={getDropdownItemStyle.value('default')}
            onClick={() => (size.value = 'default')}
          >
            默认
          </el-dropdown-item>
          <el-dropdown-item
            style={getDropdownItemStyle.value('small')}
            onClick={() => (size.value = 'small')}
          >
            紧凑
          </el-dropdown-item>
        </el-dropdown-menu>
      )
    };

    /** 列展示拖拽排序 */
    const rowDrop = (event: { preventDefault: () => void }) => {
      event.preventDefault();
      nextTick(() => {
        const wrapper: HTMLElement = document.querySelector(
          '.el-checkbox-group>div'
        );
        Sortable.create(wrapper, {
          animation: 300,
          handle: '.drag-btn',
          onEnd: ({ newIndex, oldIndex, item }) => {
            const targetThElem = item;
            const wrapperElem = targetThElem.parentNode as HTMLElement;
            const oldColumn = dynamicColumns.value[oldIndex];
            const newColumn = dynamicColumns.value[newIndex];
            if (oldColumn?.fixed || newColumn?.fixed) {
              // 当前列存在fixed属性 则不可拖拽
              const oldThElem = wrapperElem.children[oldIndex] as HTMLElement;
              if (newIndex > oldIndex) {
                wrapperElem.insertBefore(targetThElem, oldThElem);
              } else {
                wrapperElem.insertBefore(
                  targetThElem,
                  oldThElem ? oldThElem.nextElementSibling : oldThElem
                );
              }
              return;
            }
            const currentRow = dynamicColumns.value.splice(oldIndex, 1)[0];
            dynamicColumns.value.splice(newIndex, 0, currentRow);
          }
        });
      });
    };

    const isFixedColumn = (label: string) => {
      return dynamicColumns.value.filter(item => item.label === label)[0].fixed
        ? true
        : false;
    };

    const rendTippyProps = (content: string) => {
      // https://vue-tippy.netlify.app/props
      return {
        content,
        offset: [0, 18],
        duration: [300, 0],
        followCursor: true,
        hideOnClick: 'toggle'
      };
    };

    const reference = {
      reference: () => (
        <SettingIcon
          class={['w-[16px]', iconClass.value]}
          v-tippy={rendTippyProps('列设置')}
        />
      )
    };

    return () => (
      <>
        <div {...attrs} class="w-[99/100] mt-2 px-2 pb-2 bg-bg_color">
          <div class="flex justify-between w-full h-[60px] p-4">
            {slots?.title ? (
              slots.title()
            ) : (
              <p class="font-bold truncate">{props.title}</p>
            )}
            <div class="flex items-center justify-around">
              {slots?.buttons ? (
                <div class="flex mr-4">{slots.buttons()}</div>
              ) : null}
              {props.tableRef?.size ? (
                <>
                  <ExpandIcon
                    class={['w-[16px]', iconClass.value]}
                    style={{
                      transform: isExpandAll.value ? 'none' : 'rotate(-90deg)'
                    }}
                    v-tippy={rendTippyProps(
                      isExpandAll.value ? '折叠' : '展开'
                    )}
                    onClick={() => onExpand()}
                  />
                  <el-divider direction="vertical" />
                </>
              ) : null}
              <RefreshIcon
                class={[
                  'w-[16px]',
                  iconClass.value,
                  loading.value ? 'animate-spin' : ''
                ]}
                v-tippy={rendTippyProps('刷新')}
                onClick={() => onReFresh()}
              />
              <el-divider direction="vertical" />
              <el-dropdown
                v-slots={dropdown}
                trigger="click"
                v-tippy={rendTippyProps('密度')}
              >
                <CollapseIcon class={['w-[16px]', iconClass.value]} />
              </el-dropdown>
              <el-divider direction="vertical" />

              <el-popover
                v-slots={reference}
                placement="bottom-start"
                popper-style={{ padding: 0 }}
                width="200"
                trigger="click"
              >
                <div class={[topClass.value]}>
                  <el-checkbox
                    class="!-mr-1"
                    label="列展示"
                    v-model={checkAll.value}
                    indeterminate={isIndeterminate.value}
                    onChange={value => handleCheckAllChange(value)}
                  />
                  <el-button type="primary" link onClick={() => onReset()}>
                    重置
                  </el-button>
                </div>

                <div class="pt-[6px] pl-[11px]">
                  <el-scrollbar max-height="36vh">
                    <el-checkbox-group
                      v-model={checkedColumns.value}
                      onChange={value => handleCheckedColumnsChange(value)}
                    >
                      <el-space
                        direction="vertical"
                        alignment="flex-start"
                        size={0}
                      >
                        {checkColumnList.map(item => {
                          return (
                            <div class="flex items-center">
                              <DragIcon
                                class={[
                                  'drag-btn w-[16px] mr-2',
                                  isFixedColumn(item)
                                    ? '!cursor-no-drop'
                                    : '!cursor-grab'
                                ]}
                                onMouseenter={(event: {
                                  preventDefault: () => void;
                                }) => rowDrop(event)}
                              />
                              <el-checkbox
                                key={item}
                                value={item}
                                onChange={value =>
                                  handleCheckColumnListChange(value, item)
                                }
                              >
                                <span
                                  title={item}
                                  class="inline-block w-[120px] truncate hover:text-text_color_primary"
                                >
                                  {item}
                                </span>
                              </el-checkbox>
                            </div>
                          );
                        })}
                      </el-space>
                    </el-checkbox-group>
                  </el-scrollbar>
                </div>
              </el-popover>
            </div>
          </div>
          {slots.default({
            size: size.value,
            dynamicColumns: dynamicColumns.value
          })}
        </div>
      </>
    );
  }
});
